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Solid vs liquid benzoic acid

  1. Jan 27, 2009 #1
    Basically I want to know which bondings are broken when going from the solid phase to the liquid phase.

    I know that benzoic acid makes dimers (though only in gas phase, some say?) and that they have Van der Waals' forces between their rings. I tried to use my knowledge about water: Water have 4 hydrogen bonds in solid phase but less in liquid (avg 3,4?), does the same apply to benzoic acid?

    Does anyone have any qualified guesses?:shy:

    Basically I want to know which bondings are broken when going from the solid phase to the liquid phase.
     
    Last edited: Jan 28, 2009
  2. jcsd
  3. Jan 27, 2009 #2

    chemisttree

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    The dimer is through the carboxylic groups. It is seen in the NMR if the right solvent is chosen.
     
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